Add D&D enemy event pipeline example
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@@ -242,6 +242,9 @@ func referenceItem(references contracts.ReferenceSet, slotName, expectedMediaTyp
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if !ok {
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return contracts.ReferenceItem{}, false, nil
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}
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if len(slot.Items) == 0 {
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return contracts.ReferenceItem{}, false, nil
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}
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if len(slot.Items) != 1 {
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return contracts.ReferenceItem{}, false, fmt.Errorf("reference slot %q must contain exactly one item", slotName)
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}
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